Prosecutors had been seeking a four-year jail term for Jawad Bendaoud, though more serious terrorism charges had been dropped after they said there was insufficient evidence that he knew the men were terrorists.
Bendaoud, a 31-year-old convicted drug dealer from the Paris suburbs, raised his arms in triumph and patted the police officers guarding him on the shoulder as judge Isabelle Prevost-Desprez handed down the verdict.
The court has been packed for the trial, which started days before a separate case in Belgium involving Salah Abdeslam, believed to be the only surviving attacker from the Paris atrocities.
In a rare moment of humour after Frances worst attacks since World War II, Bendaoud became a national laughing stock when he gave a TV interview insisting nothing about the men had seemed suspicious.
Abaaoud and an accomplice, Chakib Akrouh, hid out and plotted a fresh attack before they were killed in a dramatic police raid at the apartment on November 18, 2015, five days after the Paris carnage.
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